Affiliation: | 1. Department of Display and Semiconductor Physics, Korea University, Sejong, Korea;2. Department of Applied Physics, Korea University, Sejong, Korea;3. Samsung Advanced Institute of Technology, Samsung Electronics Corporations, Yongin‐Si, Gyeonggi‐Do, Korea;4. Centre for Advanced Photonics and Electronics, Department of Engineering, Cambridge University, Cambridge, UK;5. Korea Electrotechnology Research Institute, Seongsan‐gu, Changwon‐si, Gyeongsangnam‐do, Korea |